What Causes the Abnormal Noise When an Automatic Transmission Car Starts at Low Speed?
1 Answers
"The causes of abnormal noise when an automatic transmission car starts at low speed include: engine failure, transmission failure, and door wear. Below is a detailed explanation of the above causes: Engine failure: Abnormal noise from the engine indicates a problem in the engine compartment, such as a metallic screeching or whistling sound, mainly caused by excessive wear of some parts or improper assembly and adjustment. Therefore, when the engine makes abnormal noises, it should be repaired promptly to prevent the fault from worsening. Transmission failure: If there is a "rustling" sound inside the transmission while driving, which disappears when the clutch or accelerator pedal is pressed, and a whistling-like sound occurs during gear shifting, the transmission should be repaired immediately. Door wear: When stepping on the accelerator or brake, there might be some abnormal noises from certain parts of the car body, mainly due to lack of lubrication in the door. However, it is necessary to determine whether the noise comes from the door hinge position or the internal components of the door, such as the window regulator, door lock mechanism, or handle mechanism. If the noise is from the door hinge or limiter, a specialized door hinge and slide lubricant can be used. For the internal components like the window regulator, door lock mechanism, or handle mechanism, a specialized door accessory lubricant should be used."
